Why should glassess not be touched together when toasting?

[Paulsquestio]

I understand that if glassess are touched together during a toast then it is said a sailor will die. Does anyone know where this idea came from and what it means?

[bunnaaay5]

Complete guess, but could it be if sailors had bad weather while at sea, glasses would clash together and due to the bad waves, a sailer would be tossed over the side of the boat never to be seen again?

[funnywebsite]

I have always toasted with glasses touching, as long as I can reach the other glass.